41results about How to "Meet temperature control needs" patented technology

The invention relates to a multi-layer co-extrusion die head intelligent temperature control system including a temperature acquisition module, an FPGA temperature control module, a drive heating module and a control panel. The temperature acquisition module includes N temperature acquisition units; the FPGA temperature control module includes an AD switching circuit, an FPGA control chip for realizing a fuzzy PID control algorithm, and a PWM output circuit; the drive heating module includes N drive heating units corresponding to heaters in a control partition; temperature signals of the control partition are acquired by the temperature acquisition units and are inputted into the FPGA temperature control module, and after treatment, N paths of PWM control variables are outputted and are respectively outputted to the drive heating units by the PWM output circuit in a single path mode. According to the control method, double-parameter input of a deviation e and a deviation change rate e[c] is adopted, correction values of a PID parameter value obtained by fuzzy inference are corrected, final PID input parameter values are obtained, and thus heating coil temperature intelligent control is realized.

The invention discloses a spacecraft thermal control system directly utilizing sunlight, which comprises a sunlight buncher, a sunlight branching device, a light-guide fiber, a heating unit and a space radiant cooling device. The spacecraft thermal control system directly converges sunlight on the sunward side of spacecraft to be served as thermal control energy of the spacecraft, utilizes light energy produced by converged sunlight to heat a spacecraft light heating device or a single machine, simultaneously reduces the increased temperature caused by sun radiation on the sunward side, solves the problem of low power consumption space thermal control, reduces the thermal control electric power of the spacecraft, also reduces corresponding solar battery array area and accumulator capacity, improves the energy utilization of sunlight, and reduces the design difficulty of spacecraft thermal control and energy equal division systems. The spacecraft thermal control system solves the technical difficulty of thermal control required by navigation of the spacecraft in the solar system, and has certain effects on improving the thermal control efficiency of the spacecraft and the space exploration range, and reducing the resource cost for navigation.

The invention provides a heat pump air-conditioning system, a control method thereof and a vehicle. The heat pump air-conditioning system comprises a compressor, an outer-side heat exchanger, a firstinner-side heat exchanger and a second inner-side heat exchanger, the first inner-side heat exchanger can conduct heat absorbing and refrigerating on the interior of the vehicle, and the second inner-side heat exchanger can conduct heat release and heating on the interior of the vehicle; the heat pump air-conditioning system further comprises a first cooling loop, a cell box body and a third heatexchanger are arranged on the first cooling loop, and the third heat exchanger can be parallelly arranged at the two ends of the first inner-side heat exchanger; the third heat exchanger can also be parallelly arranged at the two ends of the second inner-side heat exchanger. According to the heat pump air-conditioning system, through a refrigerating agent, a cell can be refrigerated and cooled; the cell can also be heated and warmed through the refrigerating agent, thus the cell is cooled or heated as required, the requirement for temperature control over the cell is met, and it can be guaranteed that all main parts, particularly the cell of the electric vehicle can efficiently and reliably run while the requirement for the comfort of internal space inside a compartment can be met.

The invention discloses a freeze-drying machine plate layer temperature control method and system. In a pre-freezing mode, a refrigerating compressor is controlled to work so that a plate layer can becooled, in the sublimation mode, a heater is controlled to work so that the temperature of the plate layer can be increased, in the pre-freezing mode and the sublimation mode, whether the refrigerating compressor needs to work or not and whether the heater needs to work or not are judged by comparing the sum of the plate layer outlet detection temperature T2 and the system temperature rise deltaT and the set reference temperature value, and the plate layer inlet detection temperature T1 is adjusted to be infinitely close to the set reference temperature value. A freeze-drying machine plate layer temperature control system comprises a plate layer heat exchange loop communicating with a freeze-drying machine plate layer, a circulation pump, the heater and a heat exchanger which are sequentially connected in series are arranged on the plate layer heat exchange loop to be connected with the refrigerating compressor, a first temperature detection part is located at the inlet position of the freeze-drying machine plate layer, and a second temperature detection part is located at the output position of the freeze-drying machine plate layer. The system is simple, high in efficiency, stable, reliable and high in control precision.

The invention provides a pipeline internal recycling device. The pipeline internal recycling device comprises a first son-mother pipe conversion tee-joint and a second son-mother pipe conversion tee-joint which are the same in structure. The first son-mother pipe conversion tee-joint and the second son-mother pipe conversion tee-joint respectively comprise a transverse pipe and a vertical pipe vertically installed on the wall of the transverse pipe and communicated with the transverse pipe, wherein the transverse pipe is internally provided with a son pipe, one end of the son pipe is located in the opening of the transverse pipe, the other end of the son pipe is communicated with the vertical pipe, and the wall of the part, located in the opening of the transverse pipe, of the transverse pipe is provided with an inner port. The outer port of the vertical pipe of the first son-mother pipe conversion tee-joint is communicated with one end of a first connecting pipe, the other end of the first connecting pipe is communicated with the water inlet of a water pump, the water outlet of the water pump is communicated with one end of a second connecting pipe, the other end of the second connecting pipe is connected with the outer port of the vertical pipe of the second son-mother pipe conversion tee-joint. The pipeline internal recycling device is installed on branches of a pipeline circulating system in a matched mode, and effective circulation can be formed through the branches and a main pipeline.

The invention discloses a polypropylene polyreactor. The polypropylene polyreactor comprises a polyreactor body and a stirring device; the polyreactor body is composed of a first part, a second part and a third part from top to bottom, wherein the first part and the third part are each in a hemispheroid shape, the second part is in a cylinder shape, and a first opening is formed in the inner side wall of the upper portion of the second part in the peripheral direction; the stirring device comprises a rotating shaft, multiple stirring blades, at least one cross rod, two baffles and multiple brush rods; one end of each cross rod is fixedly connected with the rotating shaft, and the other end of each cross rod penetrates through the first opening; one baffle is arranged in a hollow part between the inner side wall and the outer side wall of the second part, and the other baffle is arranged in the second part; the brush rods are arranged in the hollow part between the inner side wall and the outer side wall of the second part. According to the polypropylene polyreactor, in the polyreaction process, scale on the inner walls and outer walls of the second part and the third part is scraped away continuously, the polyreactor can keep a certain heat transfer coefficient, and temperature control requirements are met.

The invention belongs to the technical field of spaceflight electronic equipment, and in particular to a multi-functional composite electronic box body of a spacecraft. The multi-functional composite electronic box body comprises a temperature control panel, wherein the temperature control panel comprises an inner panel, an intermediate layer and an outer panel which are sequentially arranged from inside to outside, an inter-layer heater is arranged between the inner panel and the intermediate layer, an outer-layer heater is arranged between the intermediate layer and the outer panel, and a thermal control coating layer is coated on an outer surface of the outer panel. By the multi-functional composite electronic box body, a traditional single-layer panel is divided into the inner-layer panel, the intermediate-layer panel and the outer-layer panel, the temperature control heater of a product is pasted between the inner-layer panel and the intermediate-layer panel, an external heat flow simulation heater is pasted between the intermediate-layer panel and the outer-layer panel, and a radiating and heat dissipation thermal control coating layer is coated on an outer wall of the outer-layer panel. The multi-functional composite electronic box body is high in reliability, a vacuum thermal balance test can be accurately and effectively performed, and meanwhile, the temperature control demand under a normal temperature and normal pressure condition during product test is satisfied.

The embodiment of the invention discloses a temperature control method and device of a refrigerator and the refrigerator. The method comprises the following steps that the target temperature and the wave difference of a target chamber, and the temperature deviation amount and the additional deviation amount of the adjacent chambers are obtained; according to the target temperature, the wave difference, the temperature deviation amount and the additional deviation amount, the starting temperature and the shutdown temperature of the target chamber are calculated; and if it is judged that the target chamber reaches the starting temperature, the temperature control of the target chamber is started, and if it is judged that the target chamber reaches the shutdown temperature, the temperature control of the target chamber is closed. Through calculating the starting temperature and the shutdown temperature of the target chamber, the starting and closing of the temperature control in the target chamber is controlled according to the starting temperature and the shutdown temperature, the temperature control points of the chambers can be dynamically balanced, no extra heat preservation refrigerator is needed, more volume and cost can be saved, and meanwhile, the problem that the local temperature in each chamber is not controlled can be avoided, so that various temperature control requirements of a user on the chambers of the refrigerator are met.

The invention provides an electric vehicle temperature control method, a device, a controller and an electric vehicle; the method comprises the following steps: respectively obtaining the present temperature value of a driving motor and a generator, and respectively obtaining the present temperature value of a switch tube on a driving circuit of the driving motor and a switch tube on a driving circuit of the generator; determining the motor temperature level of the motor system according to the present temperature values of the driving motor and the generator; determining the switch tube temperature level of the motor driving system according to the present temperature values of the switch tube on the driving circuit of the driving motor and the switch tube on the driving circuit of the generator; determining regulation parameters according to the motor temperature level and the switch tube temperature level, and outputting a control signal to a temperature regulation and control device of the electric vehicle. The method and device can improve the cooling ability of a cooling system, thus preventing over-temperature conditions of all vehicle parts, and reducing part losses.

A heating and cooling system comprises a solar heat pump system, a ground-source heat pump system and a temperature and humidity independently controlled type air conditioner system, wherein the temperature and humidity independently controlled type air conditioner system comprises a ground radiant cooling and heating system, the solar heat pump system is connected with the ground-source heat pump system, and the ground-source heat pump system is connected with the ground radiant cooling and heating system. By coupling the solar heat pump system and the ground-source heat pump system and additionally arranging the temperature and humidity independently controlled type air conditioner system at the bottom end, various running working conditions can be provided to meet temperature control requirements throughout the year; and at the same time, the various running working conditions can adapt to different running environments and running requirements, so that the energy consumption is reduced to the utmost extent, and the economic benefit and the reliability of the system are improved.

The invention provides a temperature control valve based on a corrugated pipe structure and belongs to the technical field of heat control. The temperature control valve comprises a corrugated pipe, alinear stepper motor and a sliding valve. One end of the corrugated pipe is connected with the linear stepper motor, and the other end of the corrugated pipe is connected with the sliding valve. Under the condition that the size of the temperature control valve is fixed, moving and dynamic sealing of a motor rod and the sliding valve can be guaranteed, the linear stepper motor converts rotation of a rotor under an electromagnetic field into linear motion of the motor rod, and the sliding valve can guarantee that full opening and closing of two outlets of the temperature control valve are achieved, so that the requirement for flow changing at the different flow speeds is met. The temperature control valve is applied to a spacecraft, is simple in structure, and meets various different temperature control requirements on the spacecraft.

The invention discloses an autonomous temperature control system for a deep space energy particle detection instrument during in-orbit operation. The autonomous temperature control system comprises atemperature sensor, a temperature monitoring and collecting module, a control module and a temperature control module. The temperature sensor is arranged on a temperature sensitive device of a detection instrument; the temperature monitoring and collecting module acquires a temperature signal and converts the temperature signal into an electric signal; the control module judges whether the temperature control module needs to be controlled to heat the detection instrument or not according to the electric signal; the current situation that a traditional active temperature control system is complex in circuit and low in reliability can be improved, and the temperature control range meets working requirements.

The invention relates to a seawater methane sensor calibration device and calibration method based on constant temperature control. The calibration device comprises gas supply equipment, a calibration tank and a temperature control device, a gas chromatograph and a front sampling module; wherein a bubble disc and a methane sensor to be calibrated are arranged in the calibration tank, a headspace gas sampling pipe and a liquid phase sampling pipe are arranged on the calibration tank, the bubble disc is located at the bottom of the calibration tank, the input end of the headspace gas sampling pipe is communicated into the calibration tank, the output end of the headspace gas sampling pipe is connected to a gas phase sampler, the input end of the liquid phase sampling pipe is communicated to the position, close to the bottom, in the calibration tank, and the output end is connected to a liquid phase sampler, the output end of the liquid phase sampler is connected to the gas chromatograph through a first dryer, and the gas phase sampler is connected to the gas chromatograph through a second dryer. Compared with the prior art, the calibration device is beneficial to reducing the influence of environmental interference on calibration, realizes online calibration of the underwater in-situ methane sensor, and effectively reduces the measurement deviation of the methane sensor.

The invention discloses a passenger compartment temperature control device, a temperature control method thereof, equipment and a storage medium. The method comprises the following steps: acquiring a request corresponding to temperature control of a passenger compartment and/or a battery module; in response to the request, controlling the circulation state of the connecting pipe so as to enable flowing liquid to circulate in an internal flow channel of the first liquid cooling plate and/or the second liquid cooling plate, and performing temperature control on the passenger compartment and/or the battery module; according to the mode, based on the passenger compartment temperature control device composed of the first liquid cooling plate, the second liquid cooling plate, the connecting pipe and the electromagnetic valve, the electromagnetic valve is controlled, so that the first liquid cooling plate and the second liquid cooling plate work at the same time or work independently, independent heating/cooling of a passenger compartment or a battery module is achieved, or synchronous heating/cooling of the passenger compartment or the battery module is achieved; the temperature control efficiency is improved, and the comfort of a passenger compartment is improved.

The invention discloses a method for analyzing the degree of sugar-based oxidation of fish eggs through an in-vitro model. The method comprises the steps of in-vitro model device construction, myofibril glycosylation oxidation system construction, oxidation product quantitative analysis and the like. According to the method, main protein, namely myofibrillar protein, in fish meat is used for replacing a fish meat body for in-vitro research, the protein glycosylation oxidation degree in a simulation system is regulated and controlled by adjusting factors such as vacuum degree, temperature, reducing sugar type and concentration, and the problems of multi-factor interference and the like caused by complex components of a sample in traditional tissue in-situ research are solved. According to the method, accurate analysis of a glycosylation oxidation change mechanism in the protein hot processing process can be achieved, and then generation of harmful substances in the hot processing process of the fish meat and the fish meat products is accurately controlled. The in-vitro model device constructed by the method has the characteristics of rapidness, sensitivity, portability and the like, and can be applied to the technical research fields of protein oxidation, grafting, modification and the like of the fish meat and the fish meat products.

The invention relates to a bearing pedestal for chain-plate head pulleys, which comprises a bearing pedestal body; and the bearing pedestal is characterized in that a cooling water circulation channel is arranged in the bearing pedestal body; the outer side of the bearing pedestal body is provided with a water inlet and a water outlet; and the water inlet and the water outlet are communicated with the cooling water circulation channel. Therefore, due to the existence of the cooling water circulation channel, synthetic oil added once a day can be taken as cooling liquid for carrying out circulating cooling, thereby meeting the temperature control needs of daily work of chain-plate head pulleys; and through the mutual cooperation of the water inlet and the water outlet, the internal circulation or external circulation of the cooling liquid can be realized, thereby improving the refrigeration effect.

The invention discloses an extraction agent and detection method for soluble substance content detection of an elastomer modified asphalt waterproof coiled material, and belongs to the technical fieldof building material detection. The extraction agent comprises ethylene glycol dimethyl ether and saturated alkane, the saturated alkane is one of n-hexane or 2-methylpentane, and the mass ratio of the ethylene glycol dimethyl ether to the saturated alkane is 1:(4-1); a mixed solvent of the ethylene glycol dimethyl ether and one of the n-hexane or the 2-methylpentane is adopted as the extractionagent instead of trichloroethylene, the experimental results and repeatability which are similar to the experimental results and repeatability of trichloroethylene are obtained, all components are non-toxic or low-toxic and environmentally friendlier, the extraction rate of a SBS modified material in the waterproof coiled material is high, and the extraction time is shortened effectively.

The invention discloses a system and a method for realizing controllable cooling in an isothermal and isostatic press cylinder. The system comprises a medium oil tank, a first pneumatic control valve,a second pneumatic control valve, a regulating valve, an isothermal and isostatic pressing machine working cylinder and a water-cooled cooler, wherein the first pneumatic control valve is arranged onan oil inlet pipeline of the medium oil tank, the second pneumatic control valve is arranged on an oil outlet pipeline of the medium oil tank, a straight-through loop is connected between the first pneumatic control valve and the second pneumatic control valve, the regulating valve is arranged between the second pneumatic control valve and the isothermal and isostatic press working cylinder, thewater-cooled cooler is arranged on an oil way between the regulating valve and the isothermal and isostatic press working cylinder in parallel, an oil outlet pipeline of the isothermal and isostatic press working cylinder is in communication with the first pneumatic control valve, a temperature sensor is arranged in the isothermal and isostatic press working cylinder, and the temperature sensor transmits a detection signal to the regulating valve. According to the system and the method for realizing controllable cooling, the function of controllable cooling in the isothermal and isostatic press cylinder is achieved, and the requirement for temperature control of medium oil pressed by an isothermal and isostatic press is met.